Mold form for building foundations



April 20, 1954 F. GERBRACHT 2,675,599

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April 20, 1954 F. GERBRACHT 2,675,599

MOLD FORM FOR BUILDING FOUNDATIONS Filed March 2l, 1950 4 Sheets-Sheet 2 Fred Gerbrachf INVENTOR.

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April 20, 1954 F. GERBRACHT MOLD FORM FOR BUILDING FOUNOATIONS 4 Sheets-Sheet 3 Filed March 2l, A1950 Fr'ed @erbracht INVENTOR.

April 20, 1954 GERBRACHT 2,675,599

MOLD FORM FOR BUILDING FOUNDATIONS Filed Marel; 21, 195o 4 sheets-sheet 4 Fred Gerbrachl INVENroR.

BY WWWMLM Patented Apr. 20, Y1954 UNITED STAT-Es PATENT OFFICE MOLD FORM FOR BUILDING FOUNDATION S Fred Gerbracht, La Paz, Bolivia Application March 21, 1950, Serial No. 150,854

6 Claims. 1

An important object of this invention is to provide a novelly constructed form for the foundation walls of a building and a rigid but simple framework.

Another important object of this invention is to provide reinforced sheet metal form sides, which are mounted in a foundation trench between which the concrete is poured to form the foundation walls, means being provided for supporting the form sides in proper alignment and relationship.

Another important Object of this invention is t enable the foundation form to be rapidly assembled and rapidly disassembled after the concrete has set.

Another important object of this invention is to eliminate the necessity of employing skilled labor by providing forms of a simple nature, which will enable the foundation walls to be correctly and easily poured and which also will enable the framework of the building to be easily and accurately mounted thereon.

These and ancillary objects and structural features of merit are attained by this invention, the preferred embodiment of which is set forth in the following description and illustrated in the accompanying drawings, wherein:

Figure l is a View in perspective of a building, showing the same partially assembled, the building being constructed in a manner taught by this invention;

Figure 2 is a fragmentary vertical sectional View taken on the line 2-2 of Figure l;

Figure 3 is an exploded perspective view of a basic truss used in the framework of the buildlng;

Figure Il is a view in perspective of the form sides and the means for locking the sides together;

Figure 5 is a fragmentary perspective view of the means for locking the foot anchors between the form sides and for holding them in proper relationship, during the pouring and setting of the concrete;

Figure 6 is an end elevational view of cross members carried by the light trussed sections. which are disposed alongside the foundation trench, the sections being connected to the sides and holding the sides in proper relationship by means of the cross members;

Figure '7 is a view in perspective of the form sides and the supporting trussed sections, illustrating the means provided for supporting the sides, and Figure 8 isa top plan view of the trussed seclil tions, illustrating the means for joining the sections together, the length of the sections being multiple for the distance between the trusses forming the framework of the building,

As seen in Figure 1, the framework lil of a fabricated building l2 of the dwelling type is mounted on foundation walls lli. A form IE for laying the foundation Walls is illustrated in Figure '7 and includes light weight trussed sections I8. The trussed sections i8 consist of parallel side bars 20 and Z2 connected at their ends by cross bars 24 and rigidified throughout their lengths by brace bars 26. As Seen in Figure 8, a plurality of the trussed sections are joined together, the length of the sections being multiple of the distance between the trusses forming the framework of the building. The end bars 2i are provided at their opposing terminals with angle members 23, the projecting flanges of the angle members being formed with apertures The projecting flanges of the angle members of each of the sections are disposed in spaced contact to receive fasteners 32. Level gauges 34 are formed on the upper surfaces of the side bars Eil or 22 and on the end bars 24.

The end bars 24 project laterally from the sections |8 and form lateral extensions 3d. Likewise, the intermediate cross bars 38 are formed with projecting extensions til, the extensions it lying parallel with the extensions 3%. Also, the extensions 36 and the cross bars 2i terminate in Vertical collars 42, the collars being internally threaded and receiving hollow jack screws ifi having feet 46.

In use, the sections are placed alongside the foundation trench and are connected and heid in alignment by the fasteners or pins 32 through the anges of the angle members. The level gauges 34 are centered by operating the hollow jack screws 44 and thus obtaining the required elevation of the foundation at the same time. Gads 48 are driven in the jack screws and hold the sections in place. Form sides 5i! and 52 are disposed in the foundation trench and are spaced apart in contact with the opposing walls of the trench. The form sides consist of plane metal sheets 54 having corrugated sheets et secured to their o'uter faces and preferably Welded thereto.

Elongated rubber tubes it are secured to the lower portions of the corrugated sheets 56 and are inatable to close off the space between the form sides and the walls of the trench. The seal may be completed, if necessary, by adding dirt or simmilar material. The rubber tubes are interposed with vertical plates B-l, which are welded 3 to the corrugated sheets 56 and are formed with projecting angle members 62, the angle members being welded as at 64 to the outer faces of the plates.

Brackets 6E are slidably and adjustably mounted on the extensions 3G and t0 and are provided to hold the reinforced sheet metal form sides 52 in proper and accurate relationship. The brackets S6 include rectangular sleeves 68, which slide on the extensions 36 and lill, and from which depend vertical plates 1t, the plates being disposed at right angles to the plates 6G. Ears 'l2 are secured to the plates lil and are provided to seat the angle members 82 with hooks I4 being pivotally carried by pivot pins le, se-

the edging angles being supported by an upper parallel bead |06 on the upper edge of the form sides.

The building I2 is mounted on the foot anchors and includes, as seen in Figures 1 and 3, a basic truss. Thus, a splice plate Il is mounted between the lower ends of a pair of posts ||2 and ||4 and is suitably punched to provide transverse openings H6, whereby the same may be boltedV to the upper' portion of the foot anchors. A similar splice plate ||8 is welded at the top of the posts and a plate |20 is welded at the end of the chord |24, the plates ||8 and |20 being cured to the plates lll, the hooks la Ylockingthe plates Bil and 10 together, with the angle members B2 resting on the ears l2.

Means are provided for preventing the brackets 66 from sliding on the extensions 36 and 40 and includes hooks "i8, which are pivotally mounted on the extensions 3E and MJ by means of transverse pivot pins 8B, the hooks being provided with depending free ends 82 engageable in slots 84 formed in the sleeves 68. In this manner, the brackets 66 are locked against sliding movement on the extensions and the form sides are held in proper relationship by means of the hooks 'l and the angle members 62.

Means are provided for securing and holding foot anchors 86 (shown as channel-shaped in Figure 5 but, of course, the foot anchors may be of any size or shape) between the form sides and secured to the extensions 35 and llt. The means include studs 88 which project laterally from the extensions and are engageable in coinplementary openings formed in the foot anchors. A hook or latch member 90 is pivotally carried as at 92 by the extensions and is formed with a depending latch end Se, provided to hold the foot anchor on the studs 88. A U-shaped locking member B is secured at its end to the opposing face of the extensions and actuating levers 98 are provided for the studs 88. The locking member 96 is formed with an inwardly extending center shoulder |00, under which the levers 98 may be inserted, so as to hold the studs 88 in their outermost positions. To remove the extensions, after the concrete is set and the foot anchors are held securely in position, the levers 98 may be rotated, as seen in Figure 4, and then the studs may be pulled outwardly out of engagement with the foot anchors.

Thus, in use, the trussed sections are positioned on the ground at right angles to and alongside of the foundation trenches. The sections are held in correct alignment and proper positions by the gads 48 and the form sides 52 are positioned in the trench, with their outer faces in abutting relationship with the walls of the trench, the form sides being held in upright positions by the brackets 66, the latter being secured on the extensions on the cross bars by the latch members 78. The foot anchors 86 are then positioned between the form sides and are locked in their proper positions by the studs 88 and the latch arms 90. The concrete is then poured and, after the concrete has set, the foundation walls Id are thus formed. After the concrete has set, the trussed sections andthe form sides may be removed, leaving the foot anchors 86 firmly embedded in the foundation walls and extending or jutting upwardly therefrom, as seen inFigure 1. The form sides support edging angles |04 which are provided with anchor wires |02,

joined together by a pair of knee gussets |26, the latter being stampings. The composite post, formed from the posts ||2 and Ht, is slightly tapered toward its lower end, thereby giving the required width and strength at the top but without making the wall of the building thicker throughout. The posts are joined by eave plates |30, which have a flange or rim |32, which fits between the knee gussets and is bolted thereto. Girts |34 are bolted to the top and bottom flanges |36 of the chords and join the chords together. Particular attention is directed to the curvature of the knee gussets as seen in Figure 2, whereby the eaves may be easily secured thereto in continuous sheet form, thereby providing an exterior siding and roof Without projecting eaves, In this manner, wind resistance and noise are considerably reduced. Also, the inside curvature of the gussets, as seen in Figure 2, permits the ceiling and interior siding to meet at right angles and thereby obviate the need for interior molding. In this respect, it is to be noted that the gussets are angular and the outer edge is continuous, with the inner edge or surface being bent inwardly at the angular juncture to form a notch or recess |38. Gripping sheets lill) are secured to the chords, in a manner as disclosed in my co-pending application, Serial No. 152,311, filed March 28, 1950, and partitions |42 are mounted between the floor |l and the chords in a manner as disclosed in my other co-pending application, Serial No. 185,952, listed September 21, 1950.

This application, however, is directed particularly to the foundation and the manner of forming the same, including the concrete form and the framework of the building, which includes the basic truss, consisting of the continuous posts, knee gussets and chords, which are restrained at the foot anchors 86.

As seen in Figure 2, the lower panels of the exterior siding Hl are clamped to the upper portion of the foundation Wall I4. The edging angles |94 are embedded in the foundation wall by the anchors ||l2 and the lower edges of the panels are bent to extend inwardly. The lower edges are clamped upon the edging angles with a rubber strip |50 interposed therebetween, the edges being held by an angle member |52 secured to the edging angle by cap screws |54. Thus, the wall and siding are joined in the same plane and dirt accumulation is obviated.

Having described the invention, what is claimed as new is:

l. Means for forming a foundation wall comprising a pair of form sides mountable in a foundation trench and engaging the walls of the trench, a supporting trussed section horizontally disposed alongside of the trench. extensionslaterally projecting from the section and overlying the form sides, means carried by the extensions for lockingly engaging the form sides. adjustable' means for anchoring the section to the ground, and means carried by the extensions for positioning foot anchors vertically between the form sides.

2. In a building construction, means for forming a concrete foundation wall comprising form sides positioned on opposed sides in spaced relationship alongside a foundation trench, trussed sections disposed in horizontal position on either side of the trench, said trussed sections supporting said form sides, inflatable rubber tubes closing the space between the form sides and the sides of said trench.

3. A mold form for a building foundation comprising a pair of form sides, a trussed support section, said trussed section being disposed in horizontal position, said trussed section including side bars and substantially parallel crossbars, brace bars interconnecting said side bars and said crossbars, extension bars extending laterally from said trussed section across said form sides, brackets slidably mounted on said extension bars, projecting angle members mounted on said form sides, ears mounted on said brackets, said angle members being received on said ears, hooks securing said form sides to said brackets.

4. A mold form, for a building foundation comprising a pair of form sides, a trussed support section, said trussed section being disposed in horizontal position, said trussed section including side bars and substantially parallel crossbars, brace bars interconnecting said side bars and said crossbars, extension bars extending laterally from said trussed section across sai-d form sides, jack screws mounted adjacent the corners of said trussed section, brackets slidably mounted on said extension bars, projecting angle members mounted on said form sides, ears mounted on said brackets, said angle members being received on said ears, hooks securing said form sides to said brackets.

5. A mold form for a concrete foundation comprising a pair of form sides, a supporting sectionfor said form sides, said section including a pair ci side rails, cross members secured to said side rails, said cross members extending across said form sides, jack screws mounted adjacent the corners of said section, depending brackets slidably mounted on said cross members, means supporting said form sides on said brackets, means for adjustably locking said brackets on said cross member, a releasable clamp for supporting a foot anchor intermediate said form sides.

6. A mold form ior a concrete foundation cornprising a pair of form sides, a supporting section for said form sides, said section including a pair of side rails, cross members secured to said side rails, said cross members extending across said form sides, jack screws mounted adjacent the corners of said section, depending brackets slidably mounted on said cross members, means supporting said form sides on said brackets, means for adjustably locking said brackets on. said cross member, a releasable clamp for supporting a foot ancho-r intermediate said form sides, an ini'latable tube mounted adjacent the bottom of form sides, said inflatable tube forming a seal adjacent the bottom.

References Cited in the file 0f this patent UNITED STATES PATENTS Number Name Date 1,101,484 Clark June 23, 1914 1,169,464 Cornelius Jan. 25, 1916 1,227,041 Colt May 2, 1917 1,615,069 Brynoldt Jan. 18, 1927 2,263,214 Larkin et al. Nov. 18, 1941 2,353,981 Wire July 18, 1944 2,387,445 Herring Oct. 23, 1945 2,414,310 Laird Jan. 14, 1947 2,439,960 Auten Apr. 20, 1948 

